The upper respiratory tract (upper airway) consists of the nose,
mouth, sinuses, and throat. The lower respiratory tract consists of the
trachea, bronchial tubes, and the structures inside the lungs.
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By
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Healthwise Staff |
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Primary Medical Reviewer
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E. Gregory Thompson, MD - Internal Medicine |
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Specialist Medical Reviewer
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W. David Colby IV, MSc, MD, FRCPC - Infectious Disease |
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Last Revised
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June 13, 2011 |